My Rare One and I observed Earth Hour last night at our local time of 8:30 to 9:30 p.m. I know that turning off all the lights for an hour is a symbolic gesture only, but we still felt pretty virtuous. And it is kind of neat to participate in a world-wide activity.
So during our hour of darkness, we played two games of cribbage by candlelight. I got skunked the first game, but rallied to win the second.